Swagelok SS-12NBF8-G Needle Valve

The Swagelok SS-12NBF8-G is a stainless steel severe-service union-bonnet needle valve with a 2.4 Cv flow coefficient and a 1/2 in. FNPT end connection, built to meter flows precisely in demanding environments. The body is 316 stainless steel, and the valve employs a ball-stem design with Grafoil packing for reliable throttling and leak-tight performance in high-purity or corrosive service. Classified in Swagelok’s N-series of severe-service valves, the SS-12NBF8-G is intended for long service life in critical process lines where tight shutoff matters. Typical applications include isolating gauges and metering gas or liquid flows in chemical, petrochemical, or pharmaceutical systems, where stainless-steel compatibility and robust packing are essential. For ordering specifics, the model SS-12NBF8-G is listed with a 1/2 in. end connection in Swagelok catalogs and product pages.